As there is no form of punctuation, I can only guess what this long sentence means. I think it may be a warning.
Your man showing = "your flies are open"
His true = "I'm not lying"
Colours does not = "he is not exposed to the sun so won't tan well"
"Give a shit about your club" = despite this, we need to rally for the Albion.
I hope I've understood the basic idea behind your message?
To add, littlehampton and seagull should start with capital letters as they form a name.