Premailer should convert color names to six character hex

[joevandyk]

Colors in html emails work best as a six character hex ('#ffffff') rather than '#fff' or 'white'. See sass/sass#343 for details.

Somewhat unfortunately, sass will convert '#ffffff' to 'white'. When premailer inlines css generated by sass, it will insert 'white' instead of '#ffffff'.

sass/sass#343 goes over the sass issue. I believe sass's position is correct by saying this is something that should be fixed in premailer.

Examples of how html email can be broken by using 'white' or '#fff':

https://joevandyk.litmus.com/pub/ddace69 (email with 'white' embedded in the email, same thing happens with '#fff')
https://joevandyk.litmus.com/pub/350f5cf (exact same email, except with '#ffffff' in place of 'white')

[alexdunae]

Wow, wouldn't have guessed that named colours would be an issue. We'll get this fixed.

(Thanks for detailed issue report, too. Much appreciated).

[joevandyk]

Great!

By the way, I think the same problem can exist with 3 character hex (#fff). Safest thing is to probably convert all colors to six characters.

[alexdunae]

Six chars it is.

[kbav]

I noticed recently that one of my premail'd emails was using a "#fff" for white. It's a case of user error — that #fff was in the code I fed to Premailer — but maybe Premailer could fix this for noobs like me? :)