In this tutorial we are going to create an abstract background color using photoshop with simple creations effects.

Tutorial Details
•    Program: Photoshop
•    Difficulty: Beginner
•    Completion Time: 1/2 hour

Step 1
First off, let’s start by creating a new document and applying the oh-so-obligatory clouds (Filter > Render > Clouds).
Abstract Background Color
Step 2
Now that we have our base to work with, apply Mezzotint (Filter > Pixelate >
Mezzotint) with type “Long Strokes.”

Abstract Background ColorStep 3
Doesn’t look like much right now, but with the magic of motion blur
(Filter > Blur > Motion Blur), with an angle of 90 degrees and a
distance of 999 for the settings, everything will be better.
Abstract Background Color
Step 4
Now add a new layer and overlay some color over it. Here I chose
the Rainbow Gradient using the Gradient Tool (G), but you can choose whatever suits you. When you have a layer of color, set the layer mode to Overlay.
Abstract Background Color
Step 5
If you feel like being creative, you can tweak some more by changing
the curves (Ctrl + M) to make the image either brighter or gloomier depending on the mood.
Abstract Background Color
Step 6
Now create a new layer. Then select the Marquee Tool (M), set it to
elliptical, and the Feather to 30, and select around the picture (use
the example below for reference). Then select inverse (Ctrl + Shift +
I), and fill (Edit > Fill) with black. Then change the Opacity to
75% so that it is a bit more subtle.
Abstract Background Color
Step 7
Again create a new layer, and with the same Marquee tool settings as
above, select (use the example below as reference). Then change the
curve (Ctrl + M) to something like in the example. Afterward, change the Opacity to 60% so that it isn’t blinding. Try to be creative and change the
settings to your taste.
Abstract Background Color
Step 8
Now we are done with the background. You can choose to do whatever you want with it. But I’ll leave you guys with a simple example that you can easily do for generic jobs.
Reset the Marquee Tool to rectangular with 0 feather. Then create a horizontal
bar in the middle of the picture. Then fill it with white (Edit >
Fill) and lower the opacity to say, 50%.
Abstract Background Color