Different hex code than in Sketch color panel
Hi, and thank you for this nice plugin!

I noticed that hexadecimal values are sometimes different between Sketch color palette, and the palette artwork generated by Prism.
For example: 
- rgb(72, 119, 143) is hex coded as #487**7**8F by Sketch, and coded as #487**6**8F on the palette artwork generated by Prism.
- rgb(184, 214, 230) is hex coded as #B8D7E6 by Sketch, and coded as #B7D6E5 on the palette artwork generated by Prism.

Is it possible to ensure that all codes are the same between Sketch and Prism?

Thanks a lot!