How to color every echo line in shell script?

What I want to do is coloring every echo output line in an .sh script.

Like:

echo 'Download stuff...'

wget http://fdsfdsf.com/fgf.png
cd /home
echo 'Got it'

--->

[IN_COLOR]Download stuff...[IN_COLOR]
http://fdsfdsf.com/fgf.png
[IN_COLOR]Got it[IN_COLOR]

...can't paint in ^^