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My Crosshair:

cl_crosshair_drawoutline "1"
cl_crosshair_dynamic_maxdist_splitratio "0"
cl_crosshair_dynamic_splitalpha_innermod "1"
cl_crosshair_dynamic_splitalpha_outermod "0.3"
cl_crosshair_dynamic_splitdist "3.5"
cl_crosshair_outlinethickness "0.5"
cl_crosshairalpha "800"
cl_crosshaircolor "2"
cl_crosshaircolor_b "50.000000"
cl_crosshaircolor_g "250.000000"
cl_crosshaircolor_r "250.000000"
cl_crosshairdot "1"
cl_crosshairgap "1"
cl_crosshairgap_useweaponvalue "0"
cl_crosshairscale "200"
cl_crosshairsize "3"
cl_crosshairstyle "2"
cl_crosshairthickness "0.5"
cl_crosshairusealpha "1"
cl_fixedcrosshairgap "-10"

Autoexec commands:
alias +attack1 "cl_crosshairstyle 2; +attack"
alias "-attack1" "-attack; cl_crosshairstyle 5"

Remember to change bind mouse1 +attack to +attack1 in your config.cfg.