broken parser

import re

colors_dict = {
    "fred"   : "RED_FONT",
    "fgreen" : "GREEN_FONT",
    "bwhite" : "BACK_WHITE",
    "endc"   : "END_COLOR",
}


variables_dict = {
    "hero_name": "'Dude'",
    "hero_hp"  : "100",
}

strings = [
    "${fred:Hero name is} : %{local:hero_name}\n",
    "${fred:Hero hp is} : ${fgreen:%{local:hero_hp}}"
]

collect = []
patterns = [r"\$\{\s*(.*?)\s*\:\s*(.*?)\}", r"\%\{\s*(.*?)\s*\:\s*(.*?)\}"]

for i in strings:
    match_color = re.search(patterns[0], i)
    match_variable = re.search(patterns[1], i)

    if match_color:
        colors = match_color.group(1)
        string = match_color.group(2)
        colors = "".join([colors_dict[i] for i in re.split(r"\s", colors)])
        string = colors + string + colors_dict["endc"]
        collect.append(string)

    if match_variable:
        var_scope = match_variable.group(1)
        var_name = match_variable.group(2)

        if var_scope == "local":
            collect.append(variables_dict[var_name])

print(" ".join(collect))