.commonStyle__zt3BrandBg {
background-color: #20ddf2 
}    
.Button__footerBtn { 
transition: background-color 0.3s;  
} 
.Button__footerBtn:hover {
background: #20ddf2;
transition: background-color 0.3s;  
} 
.Header__tabs__link { 
transition: color 0.3s;  
}
.Header__tabs__link:hover {
color: #20ddf2;
transition: color 0.3s;   
}  
.Header__tabsTab.Header__active, 
.Header__homeNavbarFixed 
.Header__navbar 
.Header__tabsTab.Header__active {
color: #20ddf2;
}
.LoginDetail__tabLink {
transition: color 0.3s;
}
.LoginDetail__tabLink:hover {
color: #20ddf2;
transition: color 0.3s;
}      
      
.Footer__container2 a {
    color: white;
    border: 1px solid #059aeb;
    padding: 4px 10px;
  
}
    
.SearchContainer__downArrow{
border-top-color:#006fcf
}
.commonStyle__zt3BrandFill{
fill:#006fcf;
    color:#006fcf
}

E esse foi o código que você informou:

.commonStyle__zt3BrandBg {
background-color: #20ddf2
}   
.Button__footerBtn {
transition: background-color 0.3s; 
}
.Button__footerBtn:hover {
background: #20ddf2;
transition: background-color 0.3s; 
}
.Header__tabs__link {
transition: color 0.3s; 
}
.Header__tabs__link:hover {
color: #20ddf2;
transition: color 0.3s;  
} 
.Header__tabsTab.Header__active,
.Header__homeNavbarFixed
.Header__navbar
.Header__tabsTab.Header__active {
color: #20ddf2;
}
.LoginDetail__tabLink {
transition: color 0.3s;
}
.LoginDetail__tabLink:hover {
color: #20ddf2;
transition: color 0.3s;
}     
     
.Footer__container2 a {
    color: white;
    border: 1px solid #059aeb;
    padding: 4px 10px;
}

.SearchContainer__downArrow{
border-top-color:#20ddf2
}
.commonStyle__zt3BrandFill{
fill:#20ddf2;
    color:#20ddf2
}

.SearchContainer__downArrow{
border-top-color:#006fcf
}
.commonStyle__zt3BrandFill{
fill:#006fcf;
    color:#006fcf
}

[data-id="addTopic"]{display:none;}
.NoContent__contentDescription{display:none;}

/* LINKS LOGIN / RESET - SHPGROUP */
a,
a:visited {
  color: #0fd6f5 !important;
}

a:hover {
  color: #0bbcd6 !important;
}

/* AVATAR DO USUÁRIO - AJUSTE FINAL SHPGROUP */
[class*="avatar"],
[class*="Avatar"],
[class*="user-avatar"],
[class*="profile-avatar"] {
  background-color: #5e5a7a !important;
  color: #ffffff !important;
  border: 1px solid rgba(255,255,255,0.4);
}

/* LUPA DA PESQUISA - AZUL NEON SHPGROUP */
[class*="search"] svg,
[class*="Search"] svg,
[class*="search"] i,
[class*="Search"] i {
  color: #0fd6f5 !important;
  fill: #0fd6f5 !important;
}

/* MENU SUPERIOR - HOVER BRANCO NAS SESSÕES */
.Header__tabs__link:hover,
.Header__tabs__link:focus {
  color: #ffffff !important;
}

/* HOVER BRANCO TAMBÉM NO "INICIAR SESSÃO" (LINK DO HEADER) */
.Header__container a:hover,
.Header__container a:focus {
  color: #ffffff !important;
}

/* Lupa da busca – preto */
.helpcenter-search svg,
.helpcenter-search i,
.helpcenter-search button svg path {
    fill: #000000 !important;
    color: #000000 !important;
}

.commonStyle__zt3BrandBg {
    background-color: #14b8d4; /* azul um pouco mais escuro */
}

/* Links do conteúdo (miolo da página), sem afetar o topo/menu */
.Layout__main a{
  color:#003366 !important;
}

/* Títulos das categorias (Base, Comunidade, Suporte) */
.Category__title,
.Category__title a {
  color: #003366 !important;
}

/* Lista de tópicos recentes */
.List__listItem a {
  color: #003366 !important;
}

/* Links do conteúdo principal (fundo branco) */
main a {
  color: #003366 !important;
}

/* Título da seção "Tópicos recentes" */
main h2,
main .section-title {
  color: #222222 !important;
}

/* Links da lista continuam azul escuro */
main a {
  color: #003366 !important;
}