I think color helps to differentiate the elements of the design. If it's all black an white it just all blends together into meaningless mush, your viewer has to make a conscious effort to take the time to look closer and see all the parts. Color however makes all the parts individual enticing the viewer to look closer at the details.
I personally like black and white better, but color has some design benefits worth considering.
I think personally I like the BW doodles a bit more than the color ones becauses the have more impact. Also you can think of what colors they might be on there own. If that makes sense... (._.) But I love your work! And all of your amazing little doodles!
Both are equally nice But I especially ♥LOVE♥ the drawings that are OUTLiNED in colored ink/felt~tip pens but WiTHOUT any fill~in & left completely WHiTE or blank inside☺ So Iguess I would say colored lines & left white
if people said: i hate your work.. then they're just jalours cause all your work and then i mean all your doodles are just EPIC and really coowl.. you inspire me so keep going i gonna make a doodle in your style (now) and just click on watch ! Yw
Black and white overall would be seen as to being better because the viewer gets to focus on the whole piece and each detail.
where if you have it coloured you might find a "Focus area" in terms of the way you colour it. So some people might over look some areas because of colour favoritism. But if you start doing some two tone work that will be sick.
Regardless though, be it black and white or colour, I like your work, so keep on truckin' man!