Again, if you make changes at base.css you will lose all custom work at the next theme update, best to use EDIT CSS at your site admin, and those codes I attached
is what you have input at:
http://iamtrue.net/admin/theme/css
For icons you can change by uploading to your theme at cPanel as follows:
public_html/ow_themes/origin/images
AND
public_html/ow_static/themes/origin/images
It is said to upload only at: public_html/ow_themes/origin/images then clear your scripts cache, but I myself find it easier to upload at both paths then only clear my browsers cache. up to you really,,,
zip all images and upload to the above mentioned paths, select Reload to view that .zip file highlight the .zip then select Extract, again, this procedure will be executed at both of the above paths.
I have attached a few different colors of icon sets..