diff --git a/src/components/fields/PropertyGroup.jsx b/src/components/fields/PropertyGroup.jsx
index efb567b..3557724 100644
--- a/src/components/fields/PropertyGroup.jsx
+++ b/src/components/fields/PropertyGroup.jsx
@@ -59,7 +59,7 @@ export default class PropertyGroup extends React.Component {
         onChange={this.onPropertyChange}
         key={fieldName}
         fieldName={fieldName}
-        value={fieldValue === undefined ? fieldSpec.default : fieldValue}
+        value={fieldValue}
         fieldSpec={fieldSpec}
       />
     })
diff --git a/src/components/inputs/ArrayInput.jsx b/src/components/inputs/ArrayInput.jsx
index 69a01d5..bb406d8 100644
--- a/src/components/inputs/ArrayInput.jsx
+++ b/src/components/inputs/ArrayInput.jsx
@@ -12,29 +12,89 @@ class ArrayInput extends React.Component {
     onChange: PropTypes.func,
   }
 
-  changeValue(idx, newValue) {
-    console.log(idx, newValue)
-    const values = this.values.slice(0)
-    values[idx] = newValue
-    this.props.onChange(values)
+  static defaultProps = {
+    value: [],
+    default: [],
   }
 
-  get values() {
-    return this.props.value || this.props.default || []
+  constructor (props) {
+    super(props);
+    this.state = {
+      value: this.props.value.slice(0),
+      // This is so we can compare changes in getDerivedStateFromProps
+      initialPropsValue: this.props.value.slice(0),
+    };
+  }
+
+  static getDerivedStateFromProps(props, state) {
+    const value = [];
+    const initialPropsValue = state.initialPropsValue.slice(0);
+
+    Array(props.length).fill(null).map((_, i) => {
+      if (props.value[i] === state.initialPropsValue[i]) {
+        value[i] = state.value[i];
+      }
+      else {
+        value[i] = state.value[i];
+        initialPropsValue[i] = state.value[i];
+      }
+    })
+
+    return {
+      value,
+      initialPropsValue,
+    };
+  }
+
+  isComplete (value) {
+    return Array(this.props.length).fill(null).every((_, i) => {
+      const val = value[i]
+      return !(val === undefined || val === "");
+    });
+  }
+
+  changeValue(idx, newValue) {
+    const value = this.state.value.slice(0);
+    value[idx] = newValue;
+
+    this.setState({
+      value,
+    }, () => {
+      if (this.isComplete(value)) {
+        this.props.onChange(value);
+      }
+      else {
+        // Unset until complete
+        this.props.onChange(undefined);
+      }
+    });
   }
 
   render() {
-    const inputs = this.values.map((v, i) => {
+    const {value} = this.state;
+
+    const containsValues = (
+      value.length > 0 &&
+      !value.every(val => {
+        return (val === "" || val === undefined)
+      })
+    );
+
+    const inputs = Array(this.props.length).fill(null).map((_, i) => {
       if(this.props.type === 'number') {
         return <NumberInput
           key={i}
-          value={v}
+          default={containsValues ? undefined : this.props.default[i]}
+          value={value[i]}
+          required={containsValues ? true : false}
           onChange={this.changeValue.bind(this, i)}
         />
       } else {
         return <StringInput
           key={i}
-          value={v}
+          default={containsValues ? undefined : this.props.default[i]}
+          value={value[i]}
+          required={containsValues ? true : false}
           onChange={this.changeValue.bind(this, i)}
         />
       }
diff --git a/src/components/inputs/EnumInput.jsx b/src/components/inputs/EnumInput.jsx
index e704110..9472a2f 100644
--- a/src/components/inputs/EnumInput.jsx
+++ b/src/components/inputs/EnumInput.jsx
@@ -29,13 +29,13 @@ class EnumInput extends React.Component {
     if(options.length <= 3 && optionsLabelLength(options) <= 20) {
       return <MultiButtonInput
         options={options}
-        value={value}
+        value={value || this.props.default}
         onChange={onChange}
       />
     } else {
       return <SelectInput
         options={options}
-        value={value}
+        value={value || this.props.default}
         onChange={onChange}
       />
     }
diff --git a/src/components/inputs/NumberInput.jsx b/src/components/inputs/NumberInput.jsx
index 0de1fa4..b2d7dec 100644
--- a/src/components/inputs/NumberInput.jsx
+++ b/src/components/inputs/NumberInput.jsx
@@ -8,6 +8,7 @@ class NumberInput extends React.Component {
     min: PropTypes.number,
     max: PropTypes.number,
     onChange: PropTypes.func,
+    required: PropTypes.bool,
   }
 
   constructor(props) {
@@ -65,7 +66,7 @@ class NumberInput extends React.Component {
     this.setState({editing: false});
     // Reset explicitly to default value if value has been cleared
     if(this.state.value === "") {
-      return this.changeValue(this.props.default)
+      return;
     }
 
     // If set value is invalid fall back to the last valid value from props or at last resort the default value
@@ -73,7 +74,7 @@ class NumberInput extends React.Component {
       if(this.isValid(this.props.value)) {
         this.changeValue(this.props.value)
       } else {
-        this.changeValue(this.props.default)
+        this.changeValue(undefined);
       }
     }
   }
@@ -83,9 +84,10 @@ class NumberInput extends React.Component {
       spellCheck="false"
       className="maputnik-number"
       placeholder={this.props.default}
-      value={this.state.value || ""}
+      value={this.state.value === undefined ? "" : this.state.value}
       onChange={e => this.changeValue(e.target.value)}
       onBlur={this.resetValue}
+      required={this.props.required}
     />
   }
 }
diff --git a/src/components/inputs/StringInput.jsx b/src/components/inputs/StringInput.jsx
index 875a454..e160d69 100644
--- a/src/components/inputs/StringInput.jsx
+++ b/src/components/inputs/StringInput.jsx
@@ -9,6 +9,7 @@ class StringInput extends React.Component {
     default: PropTypes.string,
     onChange: PropTypes.func,
     multi: PropTypes.bool,
+    required: PropTypes.bool,
   }
 
   constructor(props) {
@@ -50,7 +51,7 @@ class StringInput extends React.Component {
       spellCheck: !(tag === "input"),
       className: classes.join(" "),
       style: this.props.style,
-      value: this.state.value,
+      value: this.state.value === undefined ? "" : this.state.value,
       placeholder: this.props.default,
       onChange: e => {
         this.setState({
@@ -63,7 +64,8 @@ class StringInput extends React.Component {
           this.setState({editing: false});
           this.props.onChange(this.state.value);
         }
-      }
+      },
+      required: this.props.required,
     });
   }
 }
diff --git a/src/components/modals/SettingsModal.jsx b/src/components/modals/SettingsModal.jsx
index 04ca51d..de4ced5 100644
--- a/src/components/modals/SettingsModal.jsx
+++ b/src/components/modals/SettingsModal.jsx
@@ -3,8 +3,12 @@ import PropTypes from 'prop-types'
 
 import {latest} from '@mapbox/mapbox-gl-style-spec'
 import InputBlock from '../inputs/InputBlock'
+import ArrayInput from '../inputs/ArrayInput'
+import NumberInput from '../inputs/NumberInput'
 import StringInput from '../inputs/StringInput'
 import SelectInput from '../inputs/SelectInput'
+import EnumInput from '../inputs/EnumInput'
+import ColorField from '../fields/ColorField'
 import Modal from './Modal'
 
 class SettingsModal extends React.Component {
@@ -16,18 +20,64 @@ class SettingsModal extends React.Component {
     onOpenToggle: PropTypes.func.isRequired,
   }
 
+  changeTransitionProperty(property, value) {
+    const transition = {
+      ...this.props.mapStyle.transition,
+    }
+
+    if (value === undefined) {
+      delete transition[property];
+    }
+    else {
+      transition[property] = value;
+    }
+
+    this.props.onStyleChanged({
+      ...this.props.mapStyle,
+      transition,
+    });
+  }
+
+  changeLightProperty(property, value) {
+    const light = {
+      ...this.props.mapStyle.light,
+    }
+
+    if (value === undefined) {
+      delete light[property];
+    }
+    else {
+      light[property] = value;
+    }
+
+    this.props.onStyleChanged({
+      ...this.props.mapStyle,
+      light,
+    });
+  }
+
   changeStyleProperty(property, value) {
     const changedStyle = {
       ...this.props.mapStyle,
-      [property]: value
+    };
+
+    if (value === undefined) {
+      delete changedStyle[property];
     }
-    this.props.onStyleChanged(changedStyle)
+    else {
+      changedStyle[property] = value;
+    }
+    this.props.onStyleChanged(changedStyle);
   }
 
   render() {
     const metadata = this.props.mapStyle.metadata || {}
-    const {onChangeMetadataProperty} = this.props;
+    const {onChangeMetadataProperty, mapStyle} = this.props;
     const inputProps = { }
+
+    const light = this.props.mapStyle.light || {};
+    const transition = this.props.mapStyle.transition || {};
+
     return <Modal
       data-wd-key="modal-settings"
       isOpen={this.props.isOpen}
@@ -89,6 +139,100 @@ class SettingsModal extends React.Component {
         />
       </InputBlock>
 
+      <InputBlock label={"Center"} doc={latest.$root.center.doc}>
+        <ArrayInput
+          length={2}
+          type="number"
+          value={mapStyle.center}
+          default={latest.$root.center.default || [0, 0]}
+          onChange={this.changeStyleProperty.bind(this, "center")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Zoom"} doc={latest.$root.zoom.doc}>
+        <NumberInput
+          {...inputProps}
+          value={mapStyle.zoom}
+          default={latest.$root.zoom.default || 0}
+          onChange={this.changeStyleProperty.bind(this, "zoom")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Bearing"} doc={latest.$root.bearing.doc}>
+        <NumberInput
+          {...inputProps}
+          value={mapStyle.bearing}
+          default={latest.$root.bearing.default}
+          onChange={this.changeStyleProperty.bind(this, "bearing")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Pitch"} doc={latest.$root.pitch.doc}>
+        <NumberInput
+          {...inputProps}
+          value={mapStyle.pitch}
+          default={latest.$root.pitch.default}
+          onChange={this.changeStyleProperty.bind(this, "pitch")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Light anchor"} doc={latest.light.anchor.doc}>
+        <EnumInput
+          {...inputProps}
+          value={light.anchor}
+          options={Object.keys(latest.light.anchor.values)}
+          default={latest.light.anchor.default}
+          onChange={this.changeLightProperty.bind(this, "anchor")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Light color"} doc={latest.light.color.doc}>
+        <ColorField
+          {...inputProps}
+          value={light.color}
+          default={latest.light.color.default}
+          onChange={this.changeLightProperty.bind(this, "color")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Light intensity"} doc={latest.light.intensity.doc}>
+        <NumberInput
+          {...inputProps}
+          value={light.intensity}
+          default={latest.light.intensity.default}
+          onChange={this.changeLightProperty.bind(this, "intensity")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Light position"} doc={latest.light.position.doc}>
+        <ArrayInput
+          {...inputProps}
+          type="number"
+          length={latest.light.position.length}
+          value={light.position}
+          default={latest.light.position.default}
+          onChange={this.changeLightProperty.bind(this, "position")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Transition delay"} doc={latest.transition.delay.doc}>
+        <NumberInput
+          {...inputProps}
+          value={transition.delay}
+          default={latest.transition.delay.default}
+          onChange={this.changeTransitionProperty.bind(this, "delay")}
+        />
+      </InputBlock>
+
+      <InputBlock label={"Transition duration"} doc={latest.transition.duration.doc}>
+        <NumberInput
+          {...inputProps}
+          value={transition.duration}
+          default={latest.transition.duration.default}
+          onChange={this.changeTransitionProperty.bind(this, "duration")}
+        />
+      </InputBlock>
+
       <InputBlock label={"Style Renderer"} doc={"Choose the default Maputnik renderer for this style."}>
         <SelectInput {...inputProps}
           data-wd-key="modal-settings.maputnik:renderer" 
@@ -101,6 +245,8 @@ class SettingsModal extends React.Component {
         />
       </InputBlock>
 
+
+
       </div>
     </Modal>
   }
diff --git a/src/styles/_input.scss b/src/styles/_input.scss
index 90e84ed..7caaa77 100644
--- a/src/styles/_input.scss
+++ b/src/styles/_input.scss
@@ -11,6 +11,11 @@
   border: none;
   background-color: $color-gray;
   color: lighten($color-lowgray, 12);
+
+  &:invalid {
+    border: solid 1px #B71C1C;
+    border-radius: 2px;
+  }
 }
 
 .maputnik-string {