Color in existing .jpg or .png

[Janitor]

Hi,

i was asked to color a B&W drawing of art, this to be exact.

   

Do I need to make multiple layers of this image to get the fill tool to make the bucket grey, wheel white stone, and the frame shades of wooden brown?

How do I go about colorizing something like this?

[Ofnuts]

See the "attachments" link at the top for instructions.

You can paint over the lines (and the black dots in the stone) by either:

• adding a layer, setting it to Multiply mode and painting on it with a tool in Normal mode. You can have a single layer but it could be more convenient in the end to have one per color (so that  you can easily change that color later)
  
• painting directly on the layer with a tool in Multiply mode.
  

[rich2005]

This is one case where small is not a great advantage. As downloaded, only 316x247 pix. I would not even think about bucket fill. Make plenty layers and paint under the original.

First of all give the original transparency.  Layer -> Transparency -> Add Alpha Channel  Then remove the white, leaving the outline.  Colors -> Color to Alpha (white is the default)

Then plenty of layers, one for each colour / area and paint in. The order of the layers does matter, a higher layer masks a lower layer, so think about it.

The only snag is a white? stone, I had to make this on its own from the original, erase and adjust before adding right at the top of the stack. I think a bit of texture is best - up to you.

All-in-all not as straight forward as you might expect.

example attached, check the layers.

[Janitor]

Ah. Thank you. So multiple layers it is. The grindstone pictures sourced show this offwhite or cream colored sand stone.

[Krikor]

With the .xcf file provided by Rich2005 you can change the colors to your liking and get the tone you prefer.
I tried with a magnification using inkscape, but the texture got lost in that way, still an option.