Standardised extent pallet

[01painadam]

Overview

Standardises colour palette across all extent widgets. All extent widgets refer to colors.json

{
  "extent": {
    ...
    "naturalForest": "#506917",
    "intactForest": "#6b8729",
    "primaryForest": "#84a637",
    "plantedForest": "#a0c746",
    "otherCover": "#c7e67c",
    "nonForest": "#e7e5a4"
  },

Note

Probably a good idea to get advice from Designer before pushing.

[01painadam]

Added colour ramp back in for future reference, in case we ever need those colours.