Fix usercard from breaking with certain colors, clean up code structure a bit.

src/services/style_setter/style_setter.js

@@ -1,4 +1,5 @@
-import { times, map } from 'lodash'
+import { times } from 'lodash'
+import { rgb2hex, hex2rgb } from '../color_convert/color_convert.js'
 
 // While this is not used anymore right now, I left it in if we want to do custom
 // styles that aren't just colors, so user can pick from a few different distinct
@@ -56,16 +57,6 @@ const setStyle = (href, commit) => {
   cssEl.addEventListener('load', setDynamic)
 }
 
-const rgb2hex = (r, g, b) => {
-  [r, g, b] = map([r, g, b], (val) => {
-    val = Math.ceil(val)
-    val = val < 0 ? 0 : val
-    val = val > 255 ? 255 : val
-    return val
-  })
-  return `#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`
-}
-
 const setColors = (col, commit) => {
   const head = document.head
   const body = document.body
@@ -108,15 +99,6 @@ const setColors = (col, commit) => {
   commit('setOption', { name: 'customTheme', value: col })
 }
 
-const hex2rgb = (hex) => {
-  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)
-  return result ? {
-    r: parseInt(result[1], 16),
-    g: parseInt(result[2], 16),
-    b: parseInt(result[3], 16)
-  } : null
-}
-
 const setPreset = (val, commit) => {
   window.fetch('/static/styles.json')
     .then((data) => data.json())