I'm creating a configurable product with color and size
When a user seaches for the product he doesn't see all of the colors - just the main product
can I make the colors of each configurable product shown in search?
Maybe it will depend of yoru configuration but normally the layered navigation will show all the possible colours available for that search result.
Another option is to allow the simpel products to be visible on search results (but not on catalog).
This two options are possible using Magento out-of-the-box.