Patch to fix accessibility issue in coloselector item.

Patch to fix accessibility issue in coloselector item.

Summary:
Issue: accessibility not working in colorselector item
Soln: Fixed accessibility issue
Signed-off By: Kumar Navneet <k.navneet@samsung.com>
Signed-off By: Shilpa Singh <shilpa.singh@samsung.com>

Test Plan: export ELM_ACCESS_MODE=1, run elementary test and test color selector palette item.

Reviewers: cedric, Hermet, shilpasingh, raster

Reviewed By: shilpasingh

Subscribers: govi, poornima.srinivasan

Differential Revision: https://phab.enlightenment.org/D2496