Can a JPG image that is shades of gray be converted to shades of blue?

I scanned my signature years ago. It is a JPG image that displays as black but when looked at in an editor it is shades of gray. Is there any way to convert it to blue. The image would then have to be shades of blue. Since there are probably 10 different shades a normal edit by changing the pixels one at a time is impractical. Can a program like GIMP change it and how? Please don't say rescan it with blue ink. I no longer have a scanner.Can a JPG image that is shades of gray be converted to shades of blue?
I'm not entirely sure how you would go about this in GIMP, though it's probably possible.



Here's one quick and easy way, of many ways, in photoshop, if you happen to have access to that... there may be a similiar process that will work on GIMP(?).



%26gt; Open your image

%26gt; Add an adjustment layer (Solid Color)

%26gt; Choose a blue you're happy with (click ok)

%26gt; Change the layer's blending mode from ';Normal'; to ';Color';



Tada. ;)