Photoshop question...?

Hi,

I scanned a line-drawing which I made myself and am planning to use photoshop to finish the work. Does anyone know how to change the colour or tone of the line drawing itself without effecting the colour of the background? Let's say I have the drawing drawn in black and scanned into photoshop already, but I want to change the line colour from black to brown... does anyone know what feature i can use to make that edit?

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Menu Image->advanced->hue/saturation.
Check the colorize checkbox and turn the lighness a bit up then play with the other settings

Use magic wand on the line work at a setting that will have all the line work selected, then adjust in hue/saturation*...or go to Replace color* and adjust slider to show just the line work (*Both are in the Image>Adjustments menu)