SDL_Color inToCol (uint32_t& in)
{
    SDL_Color out;

    out.r = (in >> 24) & 0xFF;
    out.g = (in >> 16) & 0xFF;
    out.b = (in >> 8) & 0xFF;
    out.a = in & 0xFF;

    return out;
}

bool Client::init()
{
    uint32_t b = 0xd7003dff;

    SDL_Color a = inToCol(b);

    std::cout<<(int)a.r<<" "<<(int)a.g<<" "<<(int)a.b<<" "<<(int)a.a<<std::endl;

(...)
}