I want to change the dark borders of this Icon to Yellow and am using the 'Fill bounded areas' tool.  These borders are made up of multiple shades which makes changing individual pixels - ones not next to another pixel of the same shade - a bit tedious.  I was wondering if there is a way to change all pixels of one shade in the image at one time.  I tried CTRL+Click and ALT+Click but they don't do what I want.
Is there such functionality?

Thanks

Is there any reason for not to built this via vector drawing tools?

I don't make a habit of re-inventing wheels.  😉   I have a drawing and merely wish to change some colours.   😏

You have a bitmap to be precise. You can autotrace and change colors on the result:

This is my first brush with Inkscape.  I don't know what you mean by autotrace.  Uncle Google shows me some tutorial material.  I'll have a look at that in the morning.

Originally I just took a copy of the SVG and I was using the Fill bounded areas tool to change the dark border.  However, the dark border is not one homogeneous colour - it is made up of several colours which means (very much) changing individual pixels.  It can be done, but it is tedious,  I was looking for a way to speed the process up.

Drawing from scratch will be the most accurate, cleanest, simplest and fastest way. Changing specific colors from a bitmap is more a job for a raster image editor like GIMP.

Thanks Polygon but, in the end I started a new document in Inkscape then loaded each SVG and modified it with the Fill bounded areas  tool.

This time round they were simple colours so there was no problem.  I don't know where I got the files with the variegated borders.

Anyway - all is well.

Stay well