Lesson 7: Colors - GradientsTo create a gradient for your texts or BBCode images it's possible to save a lot of time with the
'Text Color Fader' - gradient generator

When I was less experienced with BBCodes I was doing gradients manually. With graphic editors I was drawing squares with gradient backgrounds and then manually and after placing guide lines all in same distance from each other I was able to pick up needed colors with a color picker. But then I found a very good gradient generator
http://patorjk.com/text-color-fader/This is my favorite tool to make good gradients and you can set the "Output Code" to "Standard Forum Code".
http://patorjk.com/text-color-fader user interface is very simple. Write a message, choose number of colors and set the output code to 'Standard Forum Code'. Press 'generate color faded text' and it's done

(almost).
Example:Lesson 7: something about gradients xD
[color=#9600ff]L[/color][color=#9c07f2]e[/color][color=#a10de4]s[/color][color=#a714d7]s[/color][color=#ac1bc9]o[/color][color=#b221bc]n[/color] [color=#bd2fa1]7[/color][color=#c23594]:[/color] [color=#cd4379]s[/color][color=#d34a6b]o[/color][color=#d8505e]m[/color][color=#de5751]e[/color][color=#e35e43]t[/color][color=#e96436]h[/color][color=#ee6b28]i[/color][color=#f4721b]n[/color][color=#f9780d]g[/color] [color=#f9780e]a[/color][color=#f3711c]b[/color][color=#ed6a2b]o[/color][color=#e86339]u[/color][color=#e25c47]t[/color] [color=#d64e63]g[/color][color=#d04771]r[/color][color=#ca3f80]a[/color][color=#c5388e]d[/color][color=#bf319c]i[/color][color=#b92aaa]e[/color][color=#b323b8]n[/color][color=#ad1cc6]t[/color][color=#a715d4]s[/color] [color=#9c07f1]x[/color][color=#9600ff]D[/color]
Alright, now we know how to quickly generate a text with a gradient color but how to use same generator to generate gradients for BBCode images?
Well, it's a bit more complicated because it depends from our needs. Different design = different needs.
Let start from a simple example.
Exercise: ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████
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[/td]
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[/table]
We have two dark exclamation marks and we want to paint them gradient color.
In our example each exclamation mark contains 17 lines of █ ASCII chars in a size of 2pt.
To generate hexadecimal values for our gradient open
http://patorjk.com/text-color-fader/as a "message" write:
12345678901234567
You can write something else just mind that the message length must be 17 chars. Because we need 17 colors for 17 lines.
Choose your colors (I set 2 colors, #0040ff and #bd0021) and press 'generate color faded text'. Add a color tag to each line of your BBCode drawing and copy generated colors into BBCode image as new color values.
Try to paint second exclamation mark 'backwards'.
Exercise results: ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████ ████████
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[table]
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[color=#0040ff]████████
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[/td]
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[size=2pt]
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[/td]
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[/table]
Tips & Tricks (3): saving characters (I)While working on a BBCode signature
we don't need to close a color tag before we add another color tag. This can save a lot of characters.
We don't need to close a lot of tags, like [b ], [size ], [font ] and some others. More tips coming soon

I will not just read and follow for now this thread but I will comment and wanted to say thanks for this roslinpl what a very helpful tutorial, gonna follow this thread until you will teach us what you know (I hope so.)
Very generous person, since I was a failed programmer in C,C#,C++ and java. I will now focus more with BB coding and I already have a hope for now with BBCode. Kudos roslinpl! I will stay tune for more tutorials, happy holidays!
Thanks!
I hope you will learn something from my lessons
@OP
but if I have no option to draw the code pixel by pixel,or have no talent in drawing things (everything I draw looks like a piece of sh...)
I know that you do not use online image to BBCODE convertors
still is there any that you could recommend? any decent at all?
Sorry, but truly I don't know any good image2bbcode converters which can be used for BBCode signatures. If you'll find one let me know

Best regards.