Dear Dr.M.Rajabi,
as I told you, it,s my opinion that the colours of the logo have to be always the same, otherwise the patients could have confusion in their mind about your image. This entry looks good on a dark background, as you can see, but the line "GENERAL & COSMETIC DENTISTRY" in orange in a problem on a yam background. As I told you in one of my last messages: "what is good on black raspbarry could is not good on yam. So I think that we have to use more white for the words, so the logo could be applicated on both without problems. Otherwise you need two different colour palettes in accordance with two different backgrounds." So I think it's better choose a unique palette, like my next two entry. This is my opinion sir, there are some clients that, instead, prefer to have two or three different palettes of colours for their logo on different background. I'm naturally rigorous in this job, but it's my choice.
Thanks again.
(This comment references Entry #71)