Verification builds:
1.1.3.1 Retail

Summary:
Coloured beds can be dyed again, even with the same colour.

Steps to Reproduce:

1. Grab a red bed and some red dye*
2. For pocket UI: Tap on the red bed recipe
3. For Classic UI: Place red bed and red dye in the crafting grid

Observed Results:
The red bed can be dyed again and again, even with the same colour, consuming (wasting) the dye.

Expected Results:
I did not expect to be able to dye the coloured bed with the same dye.

Screenshots/Videos attached: Yes

Notes:
*Other coloured dyes and beds can be used

In the Java edition, coloured beds cannot be dyed again, only white beds can be dyed.