[General] Doesn't matter vs is not important

[elenah]

Hello,
Can you tell me if there is a difference in use between:
' It doesn't matter' and ' It's not important'?
In the sentences below for example:
A car colour isn't important to me.
A car colour doesn't matter to me.

Thank you in advance

 

[andrewg927]

If you are talking about buying a car, there is little difference.

 

[GoesStation]

Can you tell me if there is a difference in use between [STRIKE]:[/STRIKE] ​(no colon here)
'It doesn't matter' and 'It's not important'?
In the sentences below for example:
A car's colour isn't important to me.
A car's colour doesn't matter to me.

See corrections above. Never put a space after an opening quotation mark.