Updated styles for icons throughout all components

• Updated:
- styles for icons throughout all components

app/javascript/gabsocial/components/modal/group_timeline_settings_modal.js

@@ -45,7 +45,7 @@ class HomeTimelineSettingsModal extends ImmutablePureComponent {
           icon='pro'
           href='https://pro.gab.com'
           className={_s.justifyContentCenter}
-          iconClassName={[_s.mr5, _s.fillWhite].join(' ')}
+          iconClassName={[_s.mr5, _s.colorWhite].join(' ')}
         >
           <Text color='inherit' weight='bold' align='center'>
             {intl.formatMessage(messages.title)}

app/javascript/gabsocial/components/modal/pro_upgrade_modal.js

@@ -93,7 +93,7 @@ class ProUpgradeModal extends ImmutablePureComponent {
             <Text color='inherit' size='large' weight='bold' align='center'>
               {intl.formatMessage(messages.upgrade)}
             </Text>
-            <Icon id='arrow-right' size='20px' className={[_s.fillWhite, _s.ml5].join(' ')} />
+            <Icon id='arrow-right' size='20px' className={[_s.colorWhite, _s.ml5].join(' ')} />
           </Button>
         </div>