My new theme that I created (widgets, and especially color) for my blog doesn’t update. I can see the new created one on my website, but when I put the URL of my blog into the search bar, I can just see the theme with its original colors.
If you have not purchased the upgrade, then note that no changes you try out aside from those such as Custom Background, Custom Header, etc. which are stated on the theme description pages in the features column (right hand side) will be visible to visitors.
If you are using the preview mode for the Custom Design upgrade some of the settings in that mode will save but they won’t show up on the front end unless you purchase the upgrade.
To go back to the free options, go to Appearance → Themes → Customize → Colors and click the “exit the preview” link in yellow at the top of the panel on the right.